Hey guys, I recently just installed a Infinity 400W amp leading to 2 Infiniti 10" subs in a custom enclosure. I also used a LOC and a 500W max cap with it (1 farad I think). The subs sound sick when the volume is below 26 but once I pass that (very rarely) the power does cut out on the Amp. I mean it seems to be running normal (no lights dimming nor the cap is showing a warning light). Do you think it's because of the LOC? Or maybe re-check the grounds? I mean every thing seems and sounds fine untill I hit about 26 or 27. Thank you for your time guys!

 

check the power level on the amp and does it loose power or is it clipping? It just sounds like your amp has the option not to clip your subs and you just need to readjust the output. Or maybe the subs cant handle the power?

 

Sounds like you need a higher output amp. You have a 400w amp. I'm pretty sure that is peak watts, not rms; so you only have 200 watts peak per speaker and as you drain the amp.. the power level dips...but i might get tourched for saying this but I had the same issue where I was under powering my subs & corrected it when I put in a more powerfull amp for them..

 

And what he said ^.

 

What head unit are you using?

 

Yeah the sound is clipping. I tryed re-ajusting the out put and its still doing it. I'm going to go out and a buy a more powerfull amp with at least a 400watt RMS per speaker. I know the subs can hadel it because I previously had them in my MR2 with a more pwerfull amp. Thanks for your help SMOKEATOR & DUBS. I'll re-post and let you know if it works.

 

Im accually using the factory headunit for now.

 

Ahhh There is your answer!!! Bose head units as well as a lot of other factory head units have a built in feature that will drop the bass levels when the volume is cranked past a certain level…this assures sound quality and also assures drivers (speakers) will not be over driven. These are facts. You have to change your head unit.

 

If you want 400w rms per speaker you better find something putting out 800w rms. You do have 2 subs right?

 

"CLS2G35" The problem is because he is using his stock headunit which has a built in feature that protects speakers from being over driven and assures sound quality at higher volumes

 

If you're running a bandpass or vented box, your amp is plenty enough. If you're running sealed, you need more juice but that just ensures bass quality.

These guys are right about one thing. The stock headunit is your problem. I have the same issue. I'm running a diamond audio 600w to a single Alpine R 10 in a custom vented box. It pounds something ridiculous to about 27 on the volume **** but after that, it the bose speakers sound goofy. I have no LOC/LLC and run the diamond amp pre-bose.

Anything past 22 feels like the car is going into a vibrating seizure anyway and I don't like to wake the neighbors. For me it's just to fill in the low-end sound spectrum where the stock bose was lacking.

 

I know that, I was just referencing him wanting to get 400w per sub.

 

My setup Pioneer AVH-P6600 headunit running to a Rockford Fosgate P4004 for the FACTORY bose interior speakers...believe it or not if you put real amp on the factory speakers they will hit (just set the high pass filter on the amp) and I have 2 10" rockford HX2's being driven by a Rockford Fosgate P5002 bridged and yes it hits hard..not only do I have the punch but I also have the really deep lows.

 

Sounds awesome. Nice setup.

 

Thanks Whyjay...you too have a cool setup...have you seen my pioneer headunit install? probably so I've posted it already. See link below

www.nairod.com/g35mods